Cytowanie według stylu APA (wyd. 7)

Williams, J. W. (1912). Obstetrics, a text-book for the use of students and practitioners (3d enl. and rev. ed., with sixteen plates and six hundred and sixty-eight illustrations in the text.). D. Appleton and Company.

Cytowanie według stylu Chicago (wyd. 17)

Williams, J. Whitridge. Obstetrics, a Text-book for the Use of Students and Practitioners. 3d enl. and rev. ed., with sixteen plates and six hundred and sixty-eight illustrations in the text. New York and London: D. Appleton and Company, 1912.

Cytowanie według stylu MLA (wyd. 8)

Williams, J. Whitridge. Obstetrics, a Text-book for the Use of Students and Practitioners. 3d enl. and rev. ed., with sixteen plates and six hundred and sixty-eight illustrations in the text. D. Appleton and Company, 1912.